[gmx-users] In the chosen force field there is no residue type for 'THR' as a standalone (starting & ending) residue

[rose rahmani]

Hi GROMACS users

I get the following error when i use pdb2gmx tool of GROMACS 5.4.1, with
the AMBER03 ff.  command:
 gmx pdb2gmx -f threonine.pdb -o threonine.gro -water spc

error>>>In the chosen force field there is no residue type for 'THR' as a
standalone (starting & ending) residue

I attached my .pdb file here

Thank you